The trawl fishery in the Strait of Georgia and vicinity, 1945-77 / by S.J. Westrheim. : Fs97-4/1563E-PDF

"The 1945-77 trawl fishery in Georgia Strait and vicinity (Area 4B) was reviewed with respect to landing statistics, current regulations, and stock assessment of important species in Regulated Areas. All-species landings exhibited no trend during 1961-77, while fishing effort declined. Landings-per-hour-trawled (LPUE) increased after 1970, but remained substantially smaller than LPUEs from offshore grounds. Effects, if any, of the mesh regulation imposed in 1962 were obscured by the declining fishing effort and the declining landings of species which would allegedly benefit. Pacific cod (Gadus macrocephalus) is the single most important species (>50% of annual landings), and overall abundance exhibited no overall trend. Among areas, contrasting trends counterbalanced one another. English sole (Parophrys vetulus) abundance declined after the mid-1960s, even in areas where severe regulations were in effect since 1947. Lingcod (Ophiodon elongatus) abundance also declined substantially, based on landings of line-caught fish. Trawl landings exhibited no trend, but were a negligible portion of total lingcod landings"--Abstract, page iii.

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